Jim's weather 'Rant' :
Posted: Thu Feb 02, 2006 7:59 am
I've copied some chat from the 'message board': Jl: The summer west wind is a 'Diurnal' wind. In the hot weather the land heats up faster than the ocean, hot air rises & in comes the wind off the Pacific. The 'turbo charger' for us is when a 'Marine push', that is fog or a marine layer of cloud moves up the coast further exaggerating the temp. difference...& Globe your correct, the jet stream needs to be North of us for this summer condition.(We need the jet stream near us in winter to provide the 'Pineapple express.) - Feb 02 7:42AM
Globe: Wow, it really boggles my mind how relatively accurate our forecasts are given the amount of continually changing factors - so many forces all at play simultaneously. So is it true that the higher the jet stream is in the summer the higher the likely-hood of westerlies? I suppose it also has to do with the amount of cloud/cooler temperature found on the outer coast... maybe you shouldn't bother answering that... I'm probably opening a bigger can of worms than I can handle. Anyway always interesting to analyze mother nature. Thanks for the input Mb - Feb 01 10:40PM
Mb: Oops. ARE not ATE! - Feb 01 9:17PM
Mb-> Globe: I'm no meteorologist but I spend inordinate amounts of time looking at weather maps. Like This one. The position of the high above Hawaii is all important. In the winter it sags south and the lows ate directed along it's northern border to BC. In the summer it moves north and is responsible for the great weather in June - Aug. and also for the prevailing Westerly. The high winds associated with the lows that move west to east across the Pacific rotate counterclockwise and exert force on the ocean causing big waves in Hawaii and the west coast. The Pacific HIGH! It controls our destiny! - Feb 01 9:16PMl: Here is another. Pressure overlay">Pressure overlay Will I get credits for this? - Feb 01 6:31PM
Globe: doing a geolab ya - so judging by those annimations i'd say the jetstream is south of us right now? I can see now how it seems to be sucking systems towards us from the north west (which makes sense) seeing as thats where most of our lows come from. - Feb 01 6:26PM
Jl: Sorry Globe I messed up earlier & deleted your post. As the link below shows our weather is often transported to us via the Jet stream. - Feb 01 6:22PM
Jl: Sure....Are you in a weather exam. ? - Feb 01 6:15PM
GLOBE: anyone else for that matter?? I'm meteorologically inept... - Feb 01 5:31PM
Globe: JL question for ya, what is the pressure zone that influences much of BC during the winter? would that be the aleution low or the high pressure arctic air mass? Am I on the right track? - Feb 01 5:00PM LINKS: http://www.atmos.washington.edu/~ovens/ ... ?sat_300+1 http://ww2010.atmos.uiuc.edu/(Gh)/guide ... /home.rxml http://www.atmos.washington.edu/~ovens/ ... r_enhanced+ http://en.wikipedia.org/wiki/Image:Glob ... ystems.jpg http://en.wikipedia.org/wiki/Atmospheric_circulation http://weather.noaa.gov/pub/fax/PWBI99.gif
Globe: Wow, it really boggles my mind how relatively accurate our forecasts are given the amount of continually changing factors - so many forces all at play simultaneously. So is it true that the higher the jet stream is in the summer the higher the likely-hood of westerlies? I suppose it also has to do with the amount of cloud/cooler temperature found on the outer coast... maybe you shouldn't bother answering that... I'm probably opening a bigger can of worms than I can handle. Anyway always interesting to analyze mother nature. Thanks for the input Mb - Feb 01 10:40PM
Mb: Oops. ARE not ATE! - Feb 01 9:17PM
Mb-> Globe: I'm no meteorologist but I spend inordinate amounts of time looking at weather maps. Like This one. The position of the high above Hawaii is all important. In the winter it sags south and the lows ate directed along it's northern border to BC. In the summer it moves north and is responsible for the great weather in June - Aug. and also for the prevailing Westerly. The high winds associated with the lows that move west to east across the Pacific rotate counterclockwise and exert force on the ocean causing big waves in Hawaii and the west coast. The Pacific HIGH! It controls our destiny! - Feb 01 9:16PMl: Here is another. Pressure overlay">Pressure overlay Will I get credits for this? - Feb 01 6:31PM
Globe: doing a geolab ya - so judging by those annimations i'd say the jetstream is south of us right now? I can see now how it seems to be sucking systems towards us from the north west (which makes sense) seeing as thats where most of our lows come from. - Feb 01 6:26PM
Jl: Sorry Globe I messed up earlier & deleted your post. As the link below shows our weather is often transported to us via the Jet stream. - Feb 01 6:22PM
Jl: Sure....Are you in a weather exam. ? - Feb 01 6:15PM
GLOBE: anyone else for that matter?? I'm meteorologically inept... - Feb 01 5:31PM
Globe: JL question for ya, what is the pressure zone that influences much of BC during the winter? would that be the aleution low or the high pressure arctic air mass? Am I on the right track? - Feb 01 5:00PM LINKS: http://www.atmos.washington.edu/~ovens/ ... ?sat_300+1 http://ww2010.atmos.uiuc.edu/(Gh)/guide ... /home.rxml http://www.atmos.washington.edu/~ovens/ ... r_enhanced+ http://en.wikipedia.org/wiki/Image:Glob ... ystems.jpg http://en.wikipedia.org/wiki/Atmospheric_circulation http://weather.noaa.gov/pub/fax/PWBI99.gif
